Cheap ~250 GB 2.5 inch SATA SSD for old laptop

  • Here's what I need:

    Approximately 250 GB of capacity, anything between 240 and 256 GB is fine.

    2.5 inch, not sure if 7mm or 9mm. Will a 7mm drive go in a 9mm bay, or do I have to be absolutely sure which thickness my bay is? If so, where do I figure it out?

    My laptop only has SATA 2. I'd like to be able to satisfy that, but being faster than that doesn't matter.

    I want it to be about $30 or less, and I want it to be able to last for about 2 years at the very least.

    I already found some SSDs that I think fit the requirements. Are these any good, or are there better ones? In order of increasing price:

    ADATA SU635 240GB (ASU635SS-240GQ-R) for $24.99

    Silicon Power A55 256GB (SP256GBSS3A55S25) for $27.99

    Pioneer 240GB (APS-SL3N-240) for $29.49

    Addlink S20 256GB for $30.88

    Pioneer 256GB (APS-SL3N-256) for $30.99

    Dogfish 240GB for $31

    Crucial BX500 240 GB for $31.95

    ADATA SU760 256GB (ASU760SS-256GT-C) for $31.99

    Kingston A400 240GB (SA400S37/240G) for $31.99

    Sandisk SSD PLUS 240GB (SDSSDA-240G-G26) for $32.80

    Dogfish 250GB for $33

    ADATA SU800 256GB (ASU800SS-256GT-C) for $33.99

    Dogfish 256GB for $35

    Out of this list, I've heard that Crucial, Kingston, and Sandisk are good. I know about Pioneer making audio equipment, but I can't seem to find anything about their SSDs. ADATA and Silicon Power appear to be OK but not great, Dogfish appears to have durability issues, and I can't find anything about Addlink. Are these findings accurate?

    Is it worth paying more for a 250 or 256 GB drive over a 240 GB drive? Would I just be paying to have to overprovision the drive myself? Can a drive be hacked to change the amount of overprovisioning it has?

    Why are more bits per cell slower? The way I understand it is that if there are more bits per cell, you don't need to read or write as many cells, so the data should get read faster, not slower, unless each individual operation takes longer by a large enough factor to outweigh this benefit. Is that what is happening? If so, why does having more bits per cell make each operation take so much longer?

    I've heard of SSDs being bricked when they suddenly lose power, but that was way back in like 2016. Is that still a problem?

    I want to full disk encrypt my SSD with LUKS. Will that interfere with operations like TRIM?

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